Add Yahoo as a preferred source to see more of our stories on Google. Recent scans of the Pyramid of Menkaure on the Giza Plateau have revealed something remarkable: two previously unknown cavities.

Egypt unveiled the discovery of long corridor inside the Great Pyramid of Giza on Thursday, the first to be found on the structure’s north side. The corridor, which measures 9 meters (nearly 30 feet) ...

In 2010, a small team of independent Russian researchers carried out a covert robotic mission inside the Great Pyramid—one that was never authorized, never publicized, and almost never discussed.

The Great Pyramid of Giza has been studied for centuries, yet new technology is still revealing features that earlier generations could not see. Now researchers say a 4,500-year-old structure on the ...